EG2015

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https://diglib.eg.org/handle/10.2312/12086

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Browsing EG2015 by Subject "Artificial"

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    Light Chisel: 6DOF Pen Tracking
    (The Eurographics Association and John Wiley & Sons Ltd., 2015) Bubník, Vojtech; Havran, Vlastimil; Olga Sorkine-Hornung and Michael Wimmer
    We present a novel interaction device tracked in 6 degrees of freedom by two commodity cameras. The inexpensive Light Chisel is statically illuminated with two LEDs, and uses no additional sensor (e.g. inertial or magnetic) or means of communication or synchronization. Its form factor is well suited for a screwdriver or chisel grip, allowing the Light Chisel to be rolled between the fingers. The position and orientation of the tool is tracked absolutely, making the Light Chisel suited for complex interaction, e.g. geometric modeling in augmented reality. The Light Chisel is physically small, limiting the physical and optical collisions with the real world. The orientation of the tool is tracked in a wide range of angles: pitch and yaw 90 , roll 180 . We evaluated our system against the OptiTrack optical tracking system. Our system achieved mean differences from OptiTrack reference of 2:07mm in position, 1:06 in yaw and pitch, and 5:26 in roll using a pair of VGA cameras. We demonstrate usefulness of our Light Chisel in four applications: character animation, modeling by swirls, volumetric modeling, and docking of CAD models.
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    Photorealistic Rendering of Mixed Reality Scenes
    (The Eurographics Association and John Wiley & Sons Ltd., 2015) Kronander, Joel; Banterle, Francesco; Gardner, Andrew; Miandji, Ehsan; Unger, Jonas; K. Hormann and O. Staadt
    Photo-realistic rendering of virtual objects into real scenes is one of the most important research prob- lems in computer graphics. Methods for capture and rendering of mixed reality scenes are driven by a large number of applications, ranging from augmented reality to visual e ects and product visualization. Recent developments in computer graphics, computer vision, and imaging technology have enabled a wide range of new mixed reality techniques including methods for advanced image based lighting, cap- turing spatially varying lighting conditions, and algorithms for seamlessly rendering virtual objects directly into photographs without explicit measurements of the scene lighting. This report gives an overview of the state-of-the-art in this eld, and presents a categorization and comparison of current methods. Our in-depth survey provides a tool for understanding the advantages and disadvantages of each method, and gives an overview of which technique is best suited to a speci c problem.